Clinical Trials Register

Summary
EudraCT Number:	2010-019850-42
Sponsor's Protocol Code Number:	ENB-010-10
National Competent Authority:	France - ANSM
Clinical Trial Type:	EEA CTA
Trial Status:
Date on which this record was first entered in the EudraCT database:	2015-09-28
Trial results	View results

Index
A. PROTOCOL INFORMATION
B. SPONSOR INFORMATION
C. APPLICANT IDENTIFICATION
D. IMP IDENTIFICATION
D.8 INFORMATION ON PLACEBO
E. GENERAL INFORMATION ON THE TRIAL
F. POPULATION OF TRIAL SUBJECTS
G. INVESTIGATOR NETWORKS TO BE INVOLVED IN THE TRIAL
N. REVIEW BY THE COMPETENT AUTHORITY OR ETHICS COMMITTEE IN THE COUNTRY CONCERNED
P. END OF TRIAL

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A. Protocol Information

A.1

Member State Concerned

France - ANSM

A.2

EudraCT number

2010-019850-42

A.3

Full title of the trial

An Open-Label, Multicenter, Multinational Study of the Safety, Efficacy and Pharmacokinetics of Asfotase alfa (human recombinant tissue nonspecific alkaline phosphatase fusion protein) in Infants and Children ≤ 5 Years of Age with Hypophosphatasia (HPP)

A.3.1

Title of the trial for lay people, in easily understood, i.e. non-technical, language

A.4.1

Sponsor's protocol code number

ENB-010-10

A.7

Trial is part of a Paediatric Investigation Plan

A.8

EMA Decision number of Paediatric Investigation Plan

B. Sponsor Information
B.Sponsor: 1
B.1.1	Name of Sponsor	Alexion Pharma International Sàrl
B.1.3.4	Country	Switzerland
B.3.1 and B.3.2	Status of the sponsor	Commercial
B.4 Source(s) of Monetary or Material Support for the clinical trial:
B.4.1	Name of organisation providing support	Alexion Pharma International Sàrl
B.4.2	Country	Switzerland
B.5 Contact point designated by the sponsor for further information on the trial
B.5.1	Name of organisation	Alexion Europe S.A.S
B.5.2	Functional name of contact point	European Clinical Trial Information
B.5.3	Address:
B.5.3.1	Street Address	25 Boulevard de l'Amiral Bruix
B.5.3.2	Town/ city	Paris
B.5.3.3	Post code	75016
B.5.3.4	Country	France
B.5.4	Telephone number	33153643848
B.5.5	Fax number	33153643820
B.5.6	E-mail	clinicaltrials.eu@alxn.com

D. IMP Identification
D.IMP: 1
D.1.2 and D.1.3	IMP Role	Test
D.2	Status of the IMP to be used in the clinical trial
D.2.1	IMP to be used in the trial has a marketing authorisation	No
D.2.5	The IMP has been designated in this indication as an orphan drug in the Community	Yes
D.2.5.1	Orphan drug designation number	EU/3/08/594
D.3 Description of the IMP
D.3.1	Product name	Asfotase alfa
D.3.2	Product code	ENB-0040
D.3.4	Pharmaceutical form	Solution for injection
D.3.4.1	Specific paediatric formulation	No
D.3.7	Routes of administration for this IMP	Subcutaneous use
D.3.8 to D.3.10 IMP Identification Details (Active Substances)
D.3.8	INN - Proposed INN	Asfotase alfa
D.3.9.2	Current sponsor code	ENB-0040
D.3.9.3	Other descriptive name	Human recombinant tissue non-specific alkaline phosphatase fusion protein
D.3.10	Strength
D.3.10.1	Concentration unit	mg/ml milligram(s)/millilitre
D.3.10.2	Concentration type	equal
D.3.10.3	Concentration number	40
D.3.11 The IMP contains an:
D.3.11.1	Active substance of chemical origin	No
D.3.11.2	Active substance of biological/ biotechnological origin (other than Advanced Therapy IMP (ATIMP)	Yes
	The IMP is a:
D.3.11.3	Advanced Therapy IMP (ATIMP)	No
D.3.11.3.1	Somatic cell therapy medicinal product	No
D.3.11.3.2	Gene therapy medical product	No
D.3.11.3.3	Tissue Engineered Product	No
D.3.11.3.4	Combination ATIMP (i.e. one involving a medical device)	No
D.3.11.3.5	Committee on Advanced therapies (CAT) has issued a classification for this product	No
D.3.11.4	Combination product that includes a device, but does not involve an Advanced Therapy	No
D.3.11.5	Radiopharmaceutical medicinal product	No
D.3.11.6	Immunological medicinal product (such as vaccine, allergen, immune serum)	No
D.3.11.7	Plasma derived medicinal product	No
D.3.11.8	Extractive medicinal product	No
D.3.11.9	Recombinant medicinal product	Yes
D.3.11.10	Medicinal product containing genetically modified organisms	No
D.3.11.11	Herbal medicinal product	No
D.3.11.12	Homeopathic medicinal product	No
D.3.11.13	Another type of medicinal product	No
D.IMP: 2
D.1.2 and D.1.3	IMP Role	Test
D.2	Status of the IMP to be used in the clinical trial
D.2.1	IMP to be used in the trial has a marketing authorisation	No
D.2.5	The IMP has been designated in this indication as an orphan drug in the Community	Yes
D.2.5.1	Orphan drug designation number	EU/3/08/594
D.3 Description of the IMP
D.3.1	Product name	Asfotase alfa
D.3.2	Product code	ENB-0040
D.3.4	Pharmaceutical form	Solution for injection
D.3.4.1	Specific paediatric formulation	No
D.3.7	Routes of administration for this IMP	Subcutaneous use
D.3.8 to D.3.10 IMP Identification Details (Active Substances)
D.3.8	INN - Proposed INN	Asfotase alfa
D.3.9.2	Current sponsor code	ENB-0040
D.3.9.3	Other descriptive name	Human recombinant tissue non-specific alkaline phosphatase fusion protein
D.3.10	Strength
D.3.10.1	Concentration unit	mg/ml milligram(s)/millilitre
D.3.10.2	Concentration type	equal
D.3.10.3	Concentration number	100
D.3.11 The IMP contains an:
D.3.11.1	Active substance of chemical origin	No
D.3.11.2	Active substance of biological/ biotechnological origin (other than Advanced Therapy IMP (ATIMP)	Yes
	The IMP is a:
D.3.11.3	Advanced Therapy IMP (ATIMP)	No
D.3.11.3.1	Somatic cell therapy medicinal product	No
D.3.11.3.2	Gene therapy medical product	No
D.3.11.3.3	Tissue Engineered Product	No
D.3.11.3.4	Combination ATIMP (i.e. one involving a medical device)	No
D.3.11.3.5	Committee on Advanced therapies (CAT) has issued a classification for this product	No
D.3.11.4	Combination product that includes a device, but does not involve an Advanced Therapy	No
D.3.11.5	Radiopharmaceutical medicinal product	No
D.3.11.6	Immunological medicinal product (such as vaccine, allergen, immune serum)	No
D.3.11.7	Plasma derived medicinal product	No
D.3.11.8	Extractive medicinal product	No
D.3.11.9	Recombinant medicinal product	Yes
D.3.11.10	Medicinal product containing genetically modified organisms	No
D.3.11.11	Herbal medicinal product	No
D.3.11.12	Homeopathic medicinal product	No
D.3.11.13	Another type of medicinal product	No

D.8 Information on Placebo

E. General Information on the Trial

E.1 Medical condition or disease under investigation

E.1.1

Medical condition(s) being investigated

Hypophosphatasia

E.1.1.1

Medical condition in easily understood language

Hypophosphatasia

E.1.1.2

Therapeutic area

Body processes [G] - Genetic Phenomena [G05]

MedDRA Classification

E.1.2 Medical condition or disease under investigation

E.1.2	Version	18.0
E.1.2	Level	PT
E.1.2	Classification code	10049933
E.1.2	Term	Hypophosphatasia
E.1.2	System Organ Class	10010331 - Congenital, familial and genetic disorders

E.1.3

Condition being studied is a rare disease

Yes

E.2 Objective of the trial

E.2.1

Main objective of the trial

To determine the following:
• Effect of asfotase alfa treatment on skeletal manifestations of HPP as measured by radiographs using a qualitative Radiographic Global Impression of Change (RGI-C) scale for all treated patients
• Safety and tolerability of repeated subcutaneous (SC) injections of asfotase alfa for all treated patients

E.2.2

Secondary objectives of the trial

To evaluate the following:
- For patients who are not mechanically ventilated at the time of enrollment, the percentage who are alive and ventilator-free after receiving asfotase alfa as compared to an age-matched historical control group
- Effect of asfotase alfa treatment on respiratoy function as measure by ventilator status, time on respiratory support (including time on ventilator or supplemental oxygen), ventilator rate or oxygen volume, ventilator pressures, and fraction of inspired oxygen (FiO2) for all treated patients
- Effect of asfotase alfa treatment on physical growth as measured by body weight, length, arm span, head circumference, and chest circumference for all treated patients
- Effect of asfotase alfa treatment on tooth loss for all treated patients
- PK properties of asfotase alfa
- Effect of asfotase alfa on plasma inorganic pyrophosphate (PPi) and plasma pyridoxal-5'-phosphate (PLP)
- Effect of asfotase alfa on serum parathyroid hormone (PTH)

E.2.3

Trial contains a sub-study

E.3

Principal inclusion criteria

Patients must meet all of the following criteria for enrollment in this study:
- Parent or legal guardian(s) must provide written informed consent prior to any study procedures being performed and must be willing to comply with all study-related procedures. If the minor is in a position to comprehend the nature, significance, and implications of the clinical trial and to form a rational intention in the light of these facts, then he/she must provide his/her assent prior to any study procedures being performed.
- Documented diagnosis of HPP as indicated by:
o Total serum alkaline phosphatase (ALP) below the lower limit of normal for age
o Plasma PLP above the upper limit of normal (unless patient is receiving pyridoxine for seizures)
o Radiographic evidence of HPP, characterized by:
* Flared and frayed metaphyses
* Severe, generalized osteopenia
* Widened growth plates
* Areas of radiolucency or sclerosis
o Two or more of the following HPP-related findings:
* History or presence of:
+ Nontraumatic post-natal fracture
+ Delayed fracture healing
* Nephrocalcinosis or history of elevated serum calcium
* Functional craniosynostosis
* Respiratory compromise or rachitic chest deformity
* Vitamin B6-dependent seizures
* Failure to thrive
- Onset of symptoms prior to 6 months of age
- Chronological age of ≤ 5 years or adjusted age for premature infants born ≤ 37 weeks gestation
- Otherwise medically stable in the opinion of the Investigator and/or Sponsor

E.4

Principal exclusion criteria

Patients will be excluded from enrollment in this study if they meet any of the following exclusion criteria:
- Clinically significant disease, such as, but not limited to, hepatitis C virus (HCV) / human immunodeficiency virus (HIV) / hepatitis B virus (HBV), that precludes study participation, in the opinion of the Investigator and/or Sponsor
- Serum calcium or phosphate levels below the normal range
- Serum 25-hydroxy (25[OH]) vitamin D below 20 ng/mL
- Current evidence of treatable form of rickets
- Prior treatment with bisphosphonates
- Treatment with an investigational drug within 1 month prior to the start of asfotase alfa treatment
- Current enrollment in any other study involving an investigational new drug, device, or treatment for HPP (e.g., bone marrow transplantation)
- Intolerance to the study drug or any of its excipients
- Previous participation in the same study
- Close relation to the Investigator

E.5 End points

E.5.1

Primary end point(s)

• Effect of asfotase alfa treatment on skeletal manifestations of HPP as measured by radiographs using a qualitative Radiographic Global Impression of Change (RGI-C) scale for all treated patients
• Safety and tolerability of repeated subcutaneous (SC) injections of asfotase alfa for all treated patients

E.5.1.1

Timepoint(s) of evaluation of this end point

Efficacy endpoint: screening visit, month 3, month 6, month 9, month 12, month 18, month 24, month 30, month 36, month 42, month 48;
Safety endpoint: continuous monitoring

E.5.2

Secondary end point(s)

- For patients who are not mechanically ventilated at the time of enrollment, the percentage who are alive and ventilator-free after receiving asfotase alfa as compared to an age-matched historical control group
- Effect of asfotase alfa treatment on respiratory function as measured by ventilator status, time on respiratory support (including time on ventilator or supplemental oxygen), ventilator rate or oxygen volume, ventilator pressures, and fraction of inspired oxygen (FiO2) for all treated patients
- Effect of asfotase alfa treatment on physical growth as measured by body weight, length, arm span, head circumference, and chest circumference for all treated patients
- Effect of asfotase alfa treatment on tooth loss for all treated patients
- PK properties of asfotase alfa
- Effect of asfotase alfa on plasma inorganic pyrophosphate (PPi) and plasma pyridoxal-5'-phosphate (PLP)
- Effect of asfotase alfa on serum parathyroid hormone (PTH)

E.5.2.1

Timepoint(s) of evaluation of this end point

week-4 to day -8, day -1, day 1, day 2, day 3, week 3, week 6 day 1, week 6 day 3, month 3, month 6, month 9, month 12, month 15, month 18, month 24, month 30, month 36, month 42, month 48.
Not all secondary endpoints are measured on the same day.

E.6 and E.7 Scope of the trial

E.6

Scope of the trial

E.6.1

Diagnosis

E.6.2

Prophylaxis

E.6.3

Therapy

Yes

E.6.4

Safety

Yes

E.6.5

Efficacy

Yes

E.6.6

Pharmacokinetic

Yes

E.6.7

Pharmacodynamic

E.6.8

Bioequivalence

E.6.9

Dose response

E.6.10

Pharmacogenetic

E.6.11

Pharmacogenomic

E.6.12

Pharmacoeconomic

E.6.13

Others

E.7

Trial type and phase

E.7.1

Human pharmacology (Phase I)

E.7.1.1

First administration to humans

E.7.1.2

Bioequivalence study

E.7.1.3

Other

E.7.1.3.1

Other trial type description

E.7.2

Therapeutic exploratory (Phase II)

Yes

E.7.3

Therapeutic confirmatory (Phase III)

E.7.4

Therapeutic use (Phase IV)

E.8 Design of the trial

E.8.1

Controlled

E.8.1.1

Randomised

E.8.1.2

Open

Yes

E.8.1.3

Single blind

E.8.1.4

Double blind

E.8.1.5

Parallel group

E.8.1.6

Cross over

E.8.1.7

Other

E.8.2

Comparator of controlled trial

E.8.2.1

Other medicinal product(s)

E.8.2.2

Placebo

E.8.2.3

Other

E.8.3

The trial involves single site in the Member State concerned

E.8.4

The trial involves multiple sites in the Member State concerned

Yes

E.8.4.1

Number of sites anticipated in Member State concerned

E.8.5

The trial involves multiple Member States

Yes

E.8.5.1

Number of sites anticipated in the EEA

E.8.6 Trial involving sites outside the EEA

E.8.6.1

Trial being conducted both within and outside the EEA

Yes

E.8.6.2

Trial being conducted completely outside of the EEA

E.8.6.3

If E.8.6.1 or E.8.6.2 are Yes, specify the regions in which trial sites are planned

Argentina

Australia

Canada

France

Germany

Italy

Japan

Saudi Arabia

Spain

Taiwan

Turkey

United Kingdom

United States

E.8.7

Trial has a data monitoring committee

Yes

E.8.8

Definition of the end of the trial and justification where it is not the last visit of the last subject undergoing the trial

Last visit of last subject

E.8.9 Initial estimate of the duration of the trial

E.8.9.1

In the Member State concerned years

E.8.9.1

In the Member State concerned months

E.8.9.1

In the Member State concerned days

E.8.9.2

In all countries concerned by the trial years

F. Population of Trial Subjects

F.1 Age Range

F.1.1

Trial has subjects under 18

Yes

F.1.1

Number of subjects for this age range:

F.1.1.1

In Utero

F.1.1.2

Preterm newborn infants (up to gestational age < 37 weeks)

Yes

F.1.1.2.1

Number of subjects for this age range:

F.1.1.3

Newborns (0-27 days)

Yes

F.1.1.3.1

Number of subjects for this age range:

F.1.1.4

Infants and toddlers (28 days-23 months)

Yes

F.1.1.4.1

Number of subjects for this age range:

F.1.1.5

Children (2-11years)

Yes

F.1.1.5.1

Number of subjects for this age range:

F.1.1.6

Adolescents (12-17 years)

F.1.2

Adults (18-64 years)

F.1.3

Elderly (>=65 years)

F.2 Gender

F.2.1

Female

Yes

F.2.2

Male

Yes

F.3 Group of trial subjects

F.3.1

Healthy volunteers

F.3.2

Patients

Yes

F.3.3

Specific vulnerable populations

Yes

F.3.3.1

Women of childbearing potential not using contraception